These 550cc ISR Performance injectors are a high quality yet affordable direct drop in replacements for your Nissan side feed injectors. Perfect for SR/KA applications. ISR Injectors are sold in balanced sets within 2% flow variation across the transitional, low and linear ranges of pulse widths. With stainless steel internals these injectors are E85 compatible. Includes:

• 4 x 550cc side feed injectors
• injector o rings
• injector flow data sheet

** All ISR Performance Products are Designed for Off Road Use Only **